I have to say that all I hear is that supplements will help but I don't believe this. How can obstructive sleep apnea be cured with supplements? it is a physical issue the throat collapsing on itself when unconscious.
You either do exercises to strengthen the throat tissue or a second possibility that over time your teeth and jaw clenching at night has caused your teeth to close tight at night and so the throat aperture to be less open when asleep.
Use a mouth guard to keep your teeth apart 5mm and you should get more oxygen during sleep reducing the oxygen requirements for the body's organs and so a lessening n blood pressure also and no snoring.
just some out of the box thinking.